/**
* WooCommerce Stock Functions
*
* Functions used to manage product stock levels.
*
* @package WooCommerce\Functions
* @version 3.4.0
*/
defined( 'ABSPATH' ) || exit;
use Automattic\WooCommerce\Checkout\Helpers\ReserveStock;
use Automattic\WooCommerce\Enums\ProductType;
/**
* Update a product's stock amount.
*
* Uses queries rather than update_post_meta so we can do this in one query (to avoid stock issues).
*
* @since 3.0.0 this supports set, increase and decrease.
*
* @param int|WC_Product $product Product ID or product instance.
* @param int|null $stock_quantity Stock quantity.
* @param string $operation Type of operation, allows 'set', 'increase' and 'decrease'.
* @param bool $updating If true, the product object won't be saved here as it will be updated later.
* @return bool|int|null
*/
function wc_update_product_stock( $product, $stock_quantity = null, $operation = 'set', $updating = false ) {
if ( ! is_a( $product, 'WC_Product' ) ) {
$product = wc_get_product( $product );
}
if ( ! $product ) {
return false;
}
if ( ! is_null( $stock_quantity ) && $product->managing_stock() ) {
// Some products (variations) can have their stock managed by their parent. Get the correct object to be updated here.
$product_id_with_stock = $product->get_stock_managed_by_id();
$product_with_stock = $product_id_with_stock !== $product->get_id() ? wc_get_product( $product_id_with_stock ) : $product;
$data_store = WC_Data_Store::load( 'product' );
// Fire actions to let 3rd parties know the stock is about to be changed.
if ( $product_with_stock->is_type( ProductType::VARIATION ) ) {
// phpcs:disable WooCommerce.Commenting.CommentHooks.MissingSinceComment
/** This action is documented in includes/data-stores/class-wc-product-data-store-cpt.php */
do_action( 'woocommerce_variation_before_set_stock', $product_with_stock );
} else {
// phpcs:disable WooCommerce.Commenting.CommentHooks.MissingSinceComment
/** This action is documented in includes/data-stores/class-wc-product-data-store-cpt.php */
do_action( 'woocommerce_product_before_set_stock', $product_with_stock );
}
// Update the database.
$new_stock = $data_store->update_product_stock( $product_id_with_stock, $stock_quantity, $operation );
// Update the product object.
$data_store->read_stock_quantity( $product_with_stock, $new_stock );
// If this is not being called during an update routine, save the product so stock status etc is in sync, and caches are cleared.
if ( ! $updating ) {
$product_with_stock->save();
}
// Fire actions to let 3rd parties know the stock changed.
if ( $product_with_stock->is_type( ProductType::VARIATION ) ) {
// phpcs:disable WooCommerce.Commenting.CommentHooks.MissingSinceComment
/** This action is documented in includes/data-stores/class-wc-product-data-store-cpt.php */
do_action( 'woocommerce_variation_set_stock', $product_with_stock );
} else {
// phpcs:disable WooCommerce.Commenting.CommentHooks.MissingSinceComment
/** This action is documented in includes/data-stores/class-wc-product-data-store-cpt.php */
do_action( 'woocommerce_product_set_stock', $product_with_stock );
}
return $product_with_stock->get_stock_quantity();
}
return $product->get_stock_quantity();
}
/**
* Update a product's stock status.
*
* @param int $product_id Product ID.
* @param string $status Status.
*/
function wc_update_product_stock_status( $product_id, $status ) {
$product = wc_get_product( $product_id );
if ( $product ) {
$product->set_stock_status( $status );
$product->save();
}
}
/**
* When a payment is complete, we can reduce stock levels for items within an order.
*
* @since 3.0.0
* @param int $order_id Order ID.
*/
function wc_maybe_reduce_stock_levels( $order_id ) {
$order = wc_get_order( $order_id );
if ( ! $order ) {
return;
}
$stock_reduced = $order->get_data_store()->get_stock_reduced( $order_id );
$trigger_reduce = apply_filters( 'woocommerce_payment_complete_reduce_order_stock', ! $stock_reduced, $order_id );
// Only continue if we're reducing stock.
if ( ! $trigger_reduce ) {
return;
}
wc_reduce_stock_levels( $order );
// Ensure stock is marked as "reduced" in case payment complete or other stock actions are called.
$order->get_data_store()->set_stock_reduced( $order_id, true );
}
add_action( 'woocommerce_payment_complete', 'wc_maybe_reduce_stock_levels' );
add_action( 'woocommerce_order_status_completed', 'wc_maybe_reduce_stock_levels' );
add_action( 'woocommerce_order_status_processing', 'wc_maybe_reduce_stock_levels' );
add_action( 'woocommerce_order_status_on-hold', 'wc_maybe_reduce_stock_levels' );
/**
* When a payment is cancelled, restore stock.
*
* @since 3.0.0
* @param int $order_id Order ID.
*/
function wc_maybe_increase_stock_levels( $order_id ) {
$order = wc_get_order( $order_id );
if ( ! $order ) {
return;
}
$stock_reduced = $order->get_data_store()->get_stock_reduced( $order_id );
$trigger_increase = (bool) $stock_reduced;
// Only continue if we're increasing stock.
if ( ! $trigger_increase ) {
return;
}
wc_increase_stock_levels( $order );
// Ensure stock is not marked as "reduced" anymore.
$order->get_data_store()->set_stock_reduced( $order_id, false );
}
add_action( 'woocommerce_order_status_cancelled', 'wc_maybe_increase_stock_levels' );
add_action( 'woocommerce_order_status_pending', 'wc_maybe_increase_stock_levels' );
/**
* Reduce stock levels for items within an order, if stock has not already been reduced for the items.
*
* @since 3.0.0
* @param int|WC_Order $order_id Order ID or order instance.
*/
function wc_reduce_stock_levels( $order_id ) {
if ( is_a( $order_id, 'WC_Order' ) ) {
$order = $order_id;
$order_id = $order->get_id();
} else {
$order = wc_get_order( $order_id );
}
// We need an order, and a store with stock management to continue.
if ( ! $order || 'yes' !== get_option( 'woocommerce_manage_stock' ) || ! apply_filters( 'woocommerce_can_reduce_order_stock', true, $order ) ) {
return;
}
$changes = array();
// Loop over all items.
foreach ( $order->get_items() as $item ) {
if ( ! $item->is_type( 'line_item' ) ) {
continue;
}
// Only reduce stock once for each item.
$product = $item->get_product();
$item_stock_reduced = $item->get_meta( '_reduced_stock', true );
if ( $item_stock_reduced || ! $product || ! $product->managing_stock() ) {
continue;
}
/**
* Filter order item quantity.
*
* @param int|float $quantity Quantity.
* @param WC_Order $order Order data.
* @param WC_Order_Item_Product $item Order item data.
*/
$qty = apply_filters( 'woocommerce_order_item_quantity', $item->get_quantity(), $order, $item );
$item_name = $product->get_formatted_name();
$new_stock = wc_update_product_stock( $product, $qty, 'decrease' );
if ( is_wp_error( $new_stock ) ) {
/* translators: %s item name. */
$order->add_order_note( sprintf( __( 'Unable to reduce stock for item %s.', 'woocommerce' ), $item_name ) );
continue;
}
$item->add_meta_data( '_reduced_stock', $qty, true );
$item->save();
$change = array(
'product' => $product,
'from' => $new_stock + $qty,
'to' => $new_stock,
);
$changes[] = $change;
/**
* Fires when stock reduced to a specific line item
*
* @param WC_Order_Item_Product $item Order item data.
* @param array $change Change Details.
* @param WC_Order $order Order data.
* @since 7.6.0
*/
do_action( 'woocommerce_reduce_order_item_stock', $item, $change, $order );
}
wc_trigger_stock_change_notifications( $order, $changes );
do_action( 'woocommerce_reduce_order_stock', $order );
}
/**
* After stock change events, triggers emails and adds order notes.
*
* @since 3.5.0
* @param WC_Order $order order object.
* @param array $changes Array of changes.
*/
function wc_trigger_stock_change_notifications( $order, $changes ) {
if ( empty( $changes ) ) {
return;
}
$order_notes = array();
$no_stock_amount = absint( get_option( 'woocommerce_notify_no_stock_amount', 0 ) );
foreach ( $changes as $change ) {
$order_notes[] = $change['product']->get_formatted_name() . ' ' . $change['from'] . '→' . $change['to'];
$low_stock_amount = absint( wc_get_low_stock_amount( wc_get_product( $change['product']->get_id() ) ) );
if ( $change['to'] <= $no_stock_amount ) {
/**
* Action to signal that the value of 'stock_quantity' for a variation is about to change.
*
* @since 4.9
*
* @param int $product The variation whose stock is about to change.
*/
do_action( 'woocommerce_no_stock', wc_get_product( $change['product']->get_id() ) );
} elseif ( $change['to'] <= $low_stock_amount ) {
/**
* Action to signal that the value of 'stock_quantity' for a product is about to change.
*
* @since 4.9
*
* @param int $product The product whose stock is about to change.
*/
do_action( 'woocommerce_low_stock', wc_get_product( $change['product']->get_id() ) );
}
if ( $change['to'] < 0 ) {
/**
* Action fires when an item in an order is backordered.
*
* @since 3.0
*
* @param array $args {
* @type WC_Product $product The product that is on backorder.
* @type int $order_id The ID of the order.
* @type int|float $quantity The amount of product on backorder.
* }
*/
do_action(
'woocommerce_product_on_backorder',
array(
'product' => wc_get_product( $change['product']->get_id() ),
'order_id' => $order->get_id(),
'quantity' => abs( $change['from'] - $change['to'] ),
)
);
}
}
$order->add_order_note( __( 'Stock levels reduced:', 'woocommerce' ) . ' ' . implode( ', ', $order_notes ) );
}
/**
* Check if a product's stock quantity has reached certain thresholds and trigger appropriate actions.
*
* This functionality was moved out of `wc_trigger_stock_change_notifications` in order to decouple it from orders,
* since stock quantity can also be updated in other ways.
*
* @param WC_Product $product The product whose stock level has changed.
*
* @return void
*/
function wc_trigger_stock_change_actions( $product ) {
if ( true !== $product->get_manage_stock() ) {
return;
}
$no_stock_amount = absint( get_option( 'woocommerce_notify_no_stock_amount', 0 ) );
$low_stock_amount = absint( wc_get_low_stock_amount( $product ) );
$stock_quantity = $product->get_stock_quantity();
if ( $stock_quantity <= $no_stock_amount ) {
/**
* Action fires when a product's stock quantity reaches the "no stock" threshold.
*
* @since 3.0
*
* @param WC_Product $product The product whose stock quantity has changed.
*/
do_action( 'woocommerce_no_stock', $product );
} elseif ( $stock_quantity <= $low_stock_amount ) {
/**
* Action fires when a product's stock quantity reaches the "low stock" threshold.
*
* @since 3.0
*
* @param WC_Product $product The product whose stock quantity has changed.
*/
do_action( 'woocommerce_low_stock', $product );
}
}
/**
* Increase stock levels for items within an order.
*
* @since 3.0.0
* @param int|WC_Order $order_id Order ID or order instance.
*/
function wc_increase_stock_levels( $order_id ) {
if ( is_a( $order_id, 'WC_Order' ) ) {
$order = $order_id;
$order_id = $order->get_id();
} else {
$order = wc_get_order( $order_id );
}
// We need an order, and a store with stock management to continue.
if ( ! $order || 'yes' !== get_option( 'woocommerce_manage_stock' ) || ! apply_filters( 'woocommerce_can_restore_order_stock', true, $order ) ) {
return;
}
$changes = array();
// Loop over all items.
foreach ( $order->get_items() as $item ) {
if ( ! $item->is_type( 'line_item' ) ) {
continue;
}
// Only increase stock once for each item.
$product = $item->get_product();
$item_stock_reduced = $item->get_meta( '_reduced_stock', true );
if ( ! $item_stock_reduced || ! $product || ! $product->managing_stock() ) {
continue;
}
$item_name = $product->get_formatted_name();
$new_stock = wc_update_product_stock( $product, $item_stock_reduced, 'increase' );
$old_stock = $new_stock - $item_stock_reduced;
if ( is_wp_error( $new_stock ) ) {
/* translators: %s item name. */
$order->add_order_note( sprintf( __( 'Unable to restore stock for item %s.', 'woocommerce' ), $item_name ) );
continue;
}
$item->delete_meta_data( '_reduced_stock' );
$item->save();
$changes[] = $item_name . ' ' . $old_stock . '→' . $new_stock;
/**
* Fires when stock restored to a specific line item
*
* @since 9.1.0
* @param WC_Order_Item_Product $item Order item data.
* @param int $new_stock New stock.
* @param int $old_stock Old stock.
* @param WC_Order $order Order data.
*/
do_action( 'woocommerce_restore_order_item_stock', $item, $new_stock, $old_stock, $order );
}
if ( $changes ) {
$order->add_order_note( __( 'Stock levels increased:', 'woocommerce' ) . ' ' . implode( ', ', $changes ) );
}
do_action( 'woocommerce_restore_order_stock', $order );
}
/**
* See how much stock is being held in pending orders.
*
* @since 3.5.0
* @param WC_Product $product Product to check.
* @param integer $exclude_order_id Order ID to exclude.
* @return int
*/
function wc_get_held_stock_quantity( WC_Product $product, $exclude_order_id = 0 ) {
/**
* Filter: woocommerce_hold_stock_for_checkout
* Allows enable/disable hold stock functionality on checkout.
*
* @since 4.3.0
* @param bool $enabled Default to true if managing stock globally.
*/
if ( ! apply_filters( 'woocommerce_hold_stock_for_checkout', wc_string_to_bool( get_option( 'woocommerce_manage_stock', 'yes' ) ) ) ) {
return 0;
}
$reserve_stock = new ReserveStock();
return $reserve_stock->get_reserved_stock( $product, $exclude_order_id );
}
/**
* Hold stock for an order.
*
* @throws ReserveStockException If reserve stock fails.
*
* @since 4.1.0
* @param \WC_Order|int $order Order ID or instance.
*/
function wc_reserve_stock_for_order( $order ) {
/**
* Filter: woocommerce_hold_stock_for_checkout
* Allows enable/disable hold stock functionality on checkout.
*
* @since @since 4.1.0
* @param bool $enabled Default to true if managing stock globally.
*/
if ( ! apply_filters( 'woocommerce_hold_stock_for_checkout', wc_string_to_bool( get_option( 'woocommerce_manage_stock', 'yes' ) ) ) ) {
return;
}
$order = $order instanceof WC_Order ? $order : wc_get_order( $order );
if ( $order ) {
$reserve_stock = new ReserveStock();
$reserve_stock->reserve_stock_for_order( $order );
}
}
add_action( 'woocommerce_checkout_order_created', 'wc_reserve_stock_for_order' );
/**
* Release held stock for an order.
*
* @since 4.3.0
* @param \WC_Order|int $order Order ID or instance.
*/
function wc_release_stock_for_order( $order ) {
/**
* Filter: woocommerce_hold_stock_for_checkout
* Allows enable/disable hold stock functionality on checkout.
*
* @since 4.3.0
* @param bool $enabled Default to true if managing stock globally.
*/
if ( ! apply_filters( 'woocommerce_hold_stock_for_checkout', wc_string_to_bool( get_option( 'woocommerce_manage_stock', 'yes' ) ) ) ) {
return;
}
$order = $order instanceof WC_Order ? $order : wc_get_order( $order );
if ( $order ) {
$reserve_stock = new ReserveStock();
$reserve_stock->release_stock_for_order( $order );
}
}
add_action( 'woocommerce_checkout_order_exception', 'wc_release_stock_for_order' );
add_action( 'woocommerce_payment_complete', 'wc_release_stock_for_order', 11 );
add_action( 'woocommerce_order_status_cancelled', 'wc_release_stock_for_order', 11 );
add_action( 'woocommerce_order_status_completed', 'wc_release_stock_for_order', 11 );
add_action( 'woocommerce_order_status_processing', 'wc_release_stock_for_order', 11 );
add_action( 'woocommerce_order_status_on-hold', 'wc_release_stock_for_order', 11 );
/**
* Release coupons used for another order.
*
* @since 9.5.2
* @param \WC_Order|int $order Order ID or instance.
* @param bool $save Save the order after releasing coupons.
*/
function wc_release_coupons_for_order( $order, bool $save = true ) {
$order = $order instanceof WC_Order ? $order : wc_get_order( $order );
if ( $order ) {
$order->get_data_store()->release_held_coupons( $order, $save );
}
}
/**
* Return low stock amount to determine if notification needs to be sent
*
* Since 5.2.0, this function no longer redirects from variation to its parent product.
* Low stock amount can now be attached to the variation itself and if it isn't, only
* then we check the parent product, and if it's not there, then we take the default
* from the store-wide setting.
*
* @param WC_Product $product Product to get data from.
* @since 3.5.0
* @return int
*/
function wc_get_low_stock_amount( WC_Product $product ) {
$low_stock_amount = $product->get_low_stock_amount();
if ( '' === $low_stock_amount && $product->is_type( ProductType::VARIATION ) ) {
$product = wc_get_product( $product->get_parent_id() );
$low_stock_amount = $product->get_low_stock_amount();
}
if ( '' === $low_stock_amount ) {
$low_stock_amount = get_option( 'woocommerce_notify_low_stock_amount', 2 );
}
return (int) $low_stock_amount;
}
But scientists may finally have a long-term solution for erectile dysfunction.
Experts from South China University of Technology have created the world’s first 3D-printed penis implant.
The implant is designed to imitate a portion of the penis known as the corpus cavernosum, and 비아그라 퀵배송 measures 2.46-inches (62.5mm) long.
In their study, the team tested it in rabbits and pigs, with impressive results.
Pigs with the implant who had damage to their penile tissue not only achieved erections, but also saw a boost in fertility.
While it’s yet to be trialled in humans, scientists hope to extend their testing to men in the future.
‘Our findings support the further development of 3D-printed blood-vessel-rich functional organs for transplantation,’ the team said.
It’s an issue that affects more than half of men around the world. But scientists may finally have a long-term solution for erectile dysfunction (stock image)
Experts from South China University of Technology have created the world’s first 3D-printed penis implant
Erectile dysfunction is a common condition that affects the ability to either achieve or maintain an erection.
‘Most men occasionally fail to get or keep an erection,’ the NHS explains on its website.
‘This is usually caused by stress, tiredness or drinking too much alcohol, and it’s nothing to worry about.
‘It can also be a side effect of some medicines.
‘If erectile dysfunction happens often, it may be caused by a condition such as: high blood pressure or high cholesterol diabetes depression or anxiety hormone problems.’
There are several treatments available to men with the condition, including Viagra and vacuum pumps.
However, researchers have been trying to find a more long-term solution for men with the condition.
In their new study, the researchers used a hydrogel to 3D-print a model of the corpus cavernosum – a key structure in the penis that fills with blood during an erection.
The researchers used a hydrogel to 3D-print a model of the corpus cavernosum – a key structure in the penis that fills with blood during an erection. Next, they seeded this scaffold with endothelial cells – the main cells that line blood vessels
Next, they seeded this scaffold with endothelial cells – the main cells that line blood vessels.
To test the implant’s effect, the researchers implanted it into dozens of pigs and rabbits with erectile dysfunction.
Amazingly, 비아그라 구입처 they found that the implant not only helped these animals to achieve erections, but also boosted their fertility.
For example, 비아그라 효과 before receiving the implant, pigs with damage to their penile tissue had a reproductive success rate of 20 per cent.
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But after receiving the implant, this success rate jumped up to 100 per cent.
While the implant is yet to be tested in humans, the researchers believe it could be an effective treatment for men with erectile dysfunction or penile injuries.
‘In this study, 비아그라온라인약국 we created a dynamic model of the penile corpus cavernosum that not only reproduced erectile function in vitro but also restored normal penile erect morphology and reproductive function in rabbits and pigs with corpus cavernosum defects generated via in situ implantation,’ the team concluded.
‘These findings underscore the potential clinical applications of biomimetic corpus cavernosum (BCC) for the treatment of penile injuries.
‘Furthermore, this study advances the clinical application of 3D-printed artificial tissue organs.’